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Critical behavior in the layered organic–inorganic hybrid(ch3Nh3)2CuCl4

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chinese Physics B 2020年第6期29卷 487-493页

作者： Tina Raoufi Yinina Ma young Sun Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China

The critical properties and the nature of the ferromagnetic–paramagnetic phase transition in the 2D organic-inorganic hybrid(ch3Nh3)2 CuCl4 single crystal have been investigated by dc magnetization in the vicinity of the magnetic transition. Different techniques were used to estimate the critical exponents near the ferromagnetic–paramagnetic phase transition such as modified Arrott plots, the Kouvel–Fisher method, and the scaling hypothesis. Values of β = 0.22, γ = 0.82, and δ = 4.4 were obtained. These critical exponents are in line with their corresponding values confirmed through the scaling hypothesis as well as the Widom scaling relation, supporting their reliability. It is concluded that this 2D hybrid compound possesses strong ferromagnetic intra-layer exchange interaction as well as weak interlayer ferromagnetic coupling that causes a crossover from 2D to 3D long-range interaction.

关键词： critical behavior critical exponent organic-inorganic hybrid

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郭店楚墓的年代与墓主新探

陕西师范大学学报(哲学社会科学版) 2000年第3期29卷 23-27页

作者：李裕民陕西师范大学历史学系!陕西　西安　710062

郭店楚墓的下葬年代，发掘者定为战国中期晚段，学界大多以此为出发点，去研究墓中竹简年代及墓主，然而这一前提并不正确。从器物形制特征等方面考察，应在战国晚期前段，即公元前２９９年至前２７８年间。墓主人决非陈良或环渊，从身... 详细信息

郭店楚墓的下葬年代，发掘者定为战国中期晚段，学界大多以此为出发点，去研究墓中竹简年代及墓主，然而这一前提并不正确。从器物形制特征等方面考察，应在战国晚期前段，即公元前２９９年至前２７８年间。墓主人决非陈良或环渊，从身分、下葬年代、竹简中反映的某些思想等角度看，他很可能是楚太子横之师慎到。

关键词：郭店楚墓战国晚期墓主慎到

Clinical cardiac regenerative studies in children

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World Journal of Cardiology 2017年第2期9卷 147-153页

作者： Imre J Pavo ina Michel-Behnke Division of Pediatric Car-diology Department of Pediatrics and Adolescent MedicineMedical University of ViennaA1090 ViennaAustria

Although the incidence of pediatric heart failure is low, the mortality is relatively high, with severe clinical symptoms requiring repeated hospitalization or intensive care treatment in the surviving patients. Cardiac biopsy specimens have revealed a higher number of resident human cardiac progenitor cells, with greater proliferation and differentiation capacity, in the neonatal period as compared with adults, demonstrating the regeneration potential of the young heart, with rising interest in cardiac regeneration therapy in critically ill pediatric patients. We review here the available literature data, searching the MEDLINE, Google Scholar and EMBASE database for completed, and *** homepage for ongoing studies involving pediatric cardiac regeneration reports. Because of difficulties conducting randomized blinded clinical trials in pediatric patients, mostly case reports or cohort studies with a limited number of individuals have been published in the field of pediatric regenerative cardiology. The majority of pediatric autologous cell transplantations into the cardiac tissue have been performed in critically ill children with severe or terminal heart failure. Congenital heart disease, myocarditis, and idiopathic hypertrophic or dilated cardiomyopathy leading to congestive heart failure are some possible areas of interest for pediatric cardiac regeneration therapy. Autologous bone marrow mononuclear cells, progenitor cells, or cardiospheres have been applied either intracoronary or percutaneously intramyocardially in severely ill children, leading to a reported clinical benefit of cell-based cardiac therapies. In conclusion, compassionate use of autologous stem cell administration has led to at least short-term improvement in heart function and clinical stability in the majority of the critically ill pediatric patients.

关键词： Congenital heart disease heart failure Cardiac regeneration Cell-based therapy hospitalization children

Tribological performance under different environments of Ti-C-N composite films for marine wear-resistant parts

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International Journal of Minerals,Metallurgy and Materials 2023年第1期30卷 144-155页

作者： hongbo Ju Rui Zhou Jing Luan ch Sateesh Kumar Lihua Yu Junhua Xu Junfeng Yang Bowei Zhang Filipe Fernandes School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China CEMMPRE—Centre for Mechanical Engineering Materials and Processes Department of Mechanical EngineeringUniversity of CoimbraCoimbra 3030-788Portugal CFAA University of the Basque Country UPV/EHUBilbao 48170Spain ISEP-School of Engineering Polytechnic of PortoPorto 4200-072Portugal Key Laboratory of Materials Physic Institute of Solid State PhysicsHefei Institute of Physical SciencesChinese Academy of SciencesHefei 230031China Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China

The need for reducing the wear in mechanical parts used in the industry makes self-lubricant films one of the sustainable solutions to achieve long-term protection under different environmental *** purpose of this work is to study the influence of C additions on the tribological behavior of a magnetron-sputtered TiN film in air,water,and *** results show that the addition of C into the TiN binary film induced a new amorphous phase,and the films exhibited a dual phase of fcc(face-centered cubic)-TiN and amorphous *** antifriction and wear-resistance properties were enhanced in air and water by adding 19.1at%***,a further increase in the C concentration improved anti-frictional properties but also led to higher wear *** the amorphous phase induced microbatteries and accelerated the corrosion of TiN phases in seawater,the negative abrasion state was detected for all Ti-C-N films due to the adhesion of the tribocorrosion debris on the wear track.

关键词： RF reactive magnetron sputtering Ti-C-N films microstructure tribological properties in air/water/seawater

Only mothers feed mature offspring in European Ceratina bees

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Insect Science 2021年第5期28卷 1468-1481页

作者： Michael Mikat Jitka Waldhauserova Tereza Frankova Katerina Cermakova Vojtech Broz Simon Zeman Marcela Dokulilova Jakub Straka Department of Zoology Faculty of ScienceCharles UniversityPragueCzech Republic Jihlava Grammar School JihlavaCzech Republic Department of Ecology Faculty of ScienceCharles UniversityPragueCzech Republic

Parental care directed to adult offspring is uncommon in *** parental care has been documented in Xylocopinae bees(hymenoptera:Apidae).Moreover,some Ceratina bees(Xylocopinae)are known to feed mature siblings,and feeding of mature siblings is achieved by dwarf eldest daughters when mothers *** daughters are intentionally malnourished by mothers and usually originate from the first brood ***,we examined the pattern of care prov ided to young adults in three small European carpenter bees:Ceratina(Ceratina)cucurbitina,C.(Euceratina)chalybea,and C.(E.)*** of nest departures and arrivals were performed to study foraging *** detected intensive foraging behavior of mothers in all three studied ***,we did not observe regular foraging bchavior of daughters in any *** experimental removal of mothers in *** led to the emigration of young adults and did not initiate foraging activity in *** conclude that the feeding of siblings does not occur in these species unlike in the American species *** detected female-biased sex ratios in the first brood cell in *** and *** offspring in the first brood cell was smaller than other female offspring only in *** results show that a female-biased sex ratio and the small size of daughters in the first brood cell do not provide sufficient ev idence for demonstrating the existence of an altruistic daughter and also that the pattern of maternal investment is not exclusively shaped by social interactions.

关键词： foraging trip hymenoptera maternal care provisioning sociality Xylocopinae

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论劳伦斯的女性观

武汉大学学报（人文科学版） 2001年第4期54卷 479-483页

作者：赵红英武汉大学外语学院湖北武汉430072

劳伦斯是妇女解放运动的积极拥护者 ,也是行动者 ,但父权社会的男性中心主义思想始终沉淀在他的心里 ,使他深受父权制代表人物亚里斯多德的等级制及卢梭的男女自然本位观的影响。劳伦斯在尝试指出妇女达到真正完美幸福生活的途径时 ,不... 详细信息

劳伦斯是妇女解放运动的积极拥护者 ,也是行动者 ,但父权社会的男性中心主义思想始终沉淀在他的心里 ,使他深受父权制代表人物亚里斯多德的等级制及卢梭的男女自然本位观的影响。劳伦斯在尝试指出妇女达到真正完美幸福生活的途径时 ,不免流露出其男权意识形态。

关键词：父权文化男性意识异化女性性别歧视女性观文学评论英国劳伦斯小说

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财务危机预警中财务比率的选择研究

数学的实践与认识 2003年第8期33卷 36-41页

作者：王今韩文秀天津大学管理学院天津300072

本文采用定性与定量相结合的方法对财务危机预警中财务比率的选择进行了研究 .首先根据初选原则对财务比率进行了初步选择 ,然后提出了一种基于神经网络的变量选择方法 ,对初选的财务比率进行定量筛选并进行了实证研究 ,结果表明 ,这是... 详细信息

本文采用定性与定量相结合的方法对财务危机预警中财务比率的选择进行了研究 .首先根据初选原则对财务比率进行了初步选择 ,然后提出了一种基于神经网络的变量选择方法 ,对初选的财务比率进行定量筛选并进行了实证研究 ,结果表明 ,这是一种科学。

关键词：财务危机预警财务比率企业神经网络实证分析变量选择

Passivation engineering via silica‐encapsulated quantum dots for highly sensitive photodetection

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Carbon Energy 2023年第9期5卷 49-62页

作者： Ji Yun chun Byung Gi Kim Jin young Kim Woongsik Jang Dong hwan Wang School of Integrative Engineering Chung‐Ang UniversitySeoulRepublic of Korea

Organometal halide perovskites are promising semiconducting materials for photodetectors because of their favorable optoelectrical *** nanoscale perovskite materials such as quantum dots(QDs)show novel behavior,they have intrinsic stability *** this study,an effectively silane barrier-capped quantum dot(QD@APDEMS)is thinly applied onto a bulk perovskite photosensitive layer for use in ***@APDEMS is synthesized with a silane ligand with hydrophobic ch_(3)-terminal groups,resulting in excellent dispersibility and durability to enable effective *** introduction of the QD@APDEMS layer results in the formation of a lowdefect perovskite film with enlarged *** is attributed to the grain boundary interconnection effect via interaction between the functional groups of QD@APDEMS and uncoordinated Pb^(2+)in grain *** passivating the grain boundaries,where various trap sites are distributed,hole chargecarrier injection and shunt leakage can be ***,from the energy point of view,the deep highest occupied molecular orbital(hOMO)level of QD@APDEMS can work as a hole charge injection *** charge dynamics(generation,transfer,and recombination properties)and reduced trap density of QD@APDEMS are *** this perovskite film is used in a photodetector,the device performance(especially the detectivity)stands out among existing perovskites evaluated for energy sensing device applications.

关键词： grain boundary passivation perovskite quantum dots photodetectors photosensitive layers trap

Increased oxygen consumption and OXPhOS potential in superhealer mesenchymal stem cells

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Cell Regeneration 2012年第1期1卷 11-18页

作者： Curtis C hughey Maria P Alfaro Darrell D Belke Jeffery N Rottman Pampee P young David h Wasserman Jane Shearer Department of Biochemistry and Molecular Biology Faculty of MedicineUniversity of CalgaryCalgaryABCanadaT2N 1N4 Department of Pathology School of MedicineVanderbilt UniversityNashvilleTNUSA37232 Faculty of Kinesiology University of CalgaryCalgaryABCanadaT2N 1N4 Department of Medicine Division of Cardiovascular MedicineSchool of MedicineVanderbilt UniversityNashvilleTNUSA37240 Department of Veterans Affairs Medical Center NashvilleTNUSA37232 Department of Molecular Physiology and Biophysics School of MedicineVanderbilt UniversityNashvilleTNUSA37240 University of Calgary KNB Rm 3318.2500 University Dr.NWCalgaryABCanadaT2N 1N4.

Background:Cell-based therapies show promise in repairing cardiac tissue and improving contractile performance following a myocardial *** this,ischemia-induced death of transplanted cells remains a major hurdle to the efficacy of treatment.‘Superhealer’MRL/MpJ mesenchymal stem cells(MRL-MSCs)have been reported to exhibit increased engraftment resulting in reduced infarct size and enhanced contractile *** study determines whether intrinsic differences in mitochondrial oxidative phosphorylation(OXPhOS)assist in explaining the enhanced cellular survival and engraftment of ***:Compared to wild type MSCs(WT-MSCs),mitochondria from intact MRL-MSCs exhibited an increase in routine respiration and maximal electron transport capacity by 2.0-and 3.5-fold,*** routine oxygen utilization is expressed as a portion of maximal cellular oxygen flux,the MRL-MSCs have a greater spare respiratory ***,glutamate/malate-and succinate-supported oxygen consumption in permeabilized cells was elevated approximately 1.25-and 1.4-fold in the MRL-MSCs,***:The results from intact and permeabilized MSCs indicate MRL-MSCs exhibit a greater reliance on and capacity for aerobic *** greater capacity for oxidative metabolism may provide a protective effect by increasing ATP synthesis per unit substrate and prevent glycolysis-mediated acidosis and subsequent cell death upon transplantation into the glucose-and oxygen-deprived environment of the infarcted heart.

关键词： Energetics Mitochondria Oxidative phosphorylation Stem cells